Abstract
(1) It is suggested that psychophysics should extend its scope to include also a continuum of memory magnitudes. (2) The main problem of the paper is to investigate the intersubjective equation ś=c2sn2 where s denotes memory magnitude and s perceptual magnitude. (3) Certain generalizations of the method of ratio estimation and ratio production, which are necessary for determining the parameters of the intersubjective equation, are considered. (4) Three experiments are reported. In all three experiments n2 is somewhat larger than unity and shows very little variation from experiment to experiment. The other parameter c2 is consistently below unity. (5) The power function seems to be an adequate description of the relationship between memory and percept.
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